John Cain Sr. was an Australian politician who served as a member of the Australian Labor Party. He was born on July 21, 1917, and became notable for his role in the Victorian Legislative Assembly, where he represented the Melbourne electorate of Bundoora. Cain was known for his commitment to social justice and public welfare during his political career. In 1967, John Cain Sr. was appointed as the Premier of Victoria, a position he held until 1972. His leadership focused on various reforms, including education and health care improvements. Cain's legacy continues to influence Australian politics, particularly within the Labor Party.